﻿<p>An <em>IfcBoundaryCurve</em> defines a curve acting as the boundary of a surface.</p>
<blockquote class="extDef">NOTE&nbsp; Definition according to ISO/CD 10303-42:1992<br>
A boundary curve is a type of bounded curve suitable for the definition of a surface boundary.</blockquote>
<blockquote class="note">NOTE&nbsp; Entity adapted from <strong>boundary_curve</strong> defined in
ISO10303-42.</blockquote>
<blockquote class="history">HISTORY&nbsp; New entity in IFC4.</blockquote>